US4298477AExpiredUtility

Regeneration of cation ion-exchange polishers

39
Assignee: NALCO CHEMICAL COPriority: Apr 28, 1980Filed: Nov 6, 1980Granted: Nov 3, 1981
Est. expiryApr 28, 2000(expired)· nominal 20-yr term from priority
Inventors:Jack Cole
B01J 49/53
39
PatentIndex Score
10
Cited by
8
References
4
Claims

Abstract

High-pressure boiler feedwater is polished and softened with a cation ion-exchange resin, and the resin is regenerated with a readily ionizable salt of an amine-type corrosion inhibitor.

Claims

exact text as granted — not AI-modified
The invention is claimed as follows: 
     
       1. A method of treating boiler condensate water to remove undesirable cations which comprises the steps of: providing a bed of cation-exchange resin; passing water which is to be treated through said resin bed; and regenerating said resin with an aqueous solution of a morpholine. 
     
     
       2. A method of treating water to remove undesirable cations according to claim 1 wherein said resin is a zeolite. 
     
     
       3. A method of treating water to remove undesirable cations according to claim 1 wherein said morpholine salt is morpholine acetate. 
     
     
       4. A method of treating water to remove undesirable cations according to claim 1 wherein said morpholine salt is morpholine sulfate.

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